A person stands between two speakers driven by the same source.Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s.The person is 1.65 m from one speaker and 4.95 m from the other.What type of interference does the person perceive?
A)constructive
B)destructive
C)both constructive and destructive
D)neither constructive nor destructive

Question

Quizplus · Accepted Answer

The person perceives constructive interference because the path length difference between the two speakers is 3.3 m, which is an integer multiple (3 times) of the wavelength (1.65 m) of the 200 Hz sound wave in air (speed of sound / frequency = 330 m/s / 200 Hz). This condition leads to constructive interference where the sound waves from the two speakers reinforce each other.

A Person Stands Between Two Speakers Driven by the Same